/27 the new /24

Suresh Ramasubramanian ops.lists at gmail.com
Fri Oct 2 15:55:17 UTC 2015

Besides which more than one provider filters by a minimum prefix length per /8 - wasn't  Swisscom or someone similar doing that?  So multi homing with even a /24 is somewhat patchy in terms of effectiveness


> On 02-Oct-2015, at 8:54 PM, William Herrin <bill at herrin.us> wrote:
>> On Fri, Oct 2, 2015 at 10:32 AM, Justin Wilson - MTIN <lists at mtin.net> wrote:
>> However, what do we do about the new networks which
>> want to do BGP but only can get small allocations from
>> someone (either a RIR or one of their upstreams)?
> Hi Justin,
> Rent or sell them a /24 and make money. If they can't afford a /24 at
> today's market rate, why should the rest of us spend much more money
> upgrading routers to accommodate their advertisement?
> The annual systemic cost of carrying that prefix is still more than
> double the one-time cost of acquiring a /24. No doubt that gap will
> close, but there's no cost justification to change the /24 filters
> just yet.
> Regards,
> Bill Herrin
> -- 
> William Herrin ................ herrin at dirtside.com  bill at herrin.us
> Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>

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